Apple seems to have archived its documentation for making PKG packages, and PackageMaker hasn't been seen since 2012. Are packages deprecated, or are there new ways for creating them?

Now that CUPS backends, filters and PPDs are deprecated, I'm trying to set up a print to file queue using ippeveprinter. But I can't get it to work. Anyone know anything about it? I've tried: ippeveprinter -D file:///Users/Shared/Print/Out -F application/pdf -c /usr/local/bin/pscommand.sh myprinter and then created a shell command that runs: cupsfilter $1 I've tried it without the -c flag as well. Sometimes I've produced .prn files, and occasionally .urf files (but without changing anything I've also got zero length files). But I just can't get a PDF into my destination folder.